Shear resistance evaluation on the enamel surface of deciduous teeth following acid etching with or without previous air abrasion

• Autor(a) principal: Zuanon, Angela Cristina Cilense
• Data de Publicação: 2010
• Outros Autores: Capote, Ticiana Sidorenko de Oliveira, Bordin, Marina Machado
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Dental Science
• Texto Completo: https://ojs.ict.unesp.br/index.php/cob/article/view/214

The purpose of this study was to evaluate the shear resistance of a composite resin to the enamel surface of deciduous teeth after acid etching surface with or without previous air abrasion. Sixteen sound exfoliated deciduous incisors were assigned to 2 groups. Group I was acid etched with 37% phosphoric acid and Group II was air abraded with 50-mm aluminum oxide particles for 15 seconds, at 80 psi and a 5-mm distance from the dental surface. The adhesive system Scotchbond Multi Purpose and Z100 composite resin was applied on both experimental groups. The Student’s t test de­monstrated significant statistical difference between the groups (p=0.0001). The mean shear bond strengths for groups I and II are 10.65 MPa and 6.32 MPa, respectively. The authors concluded that the maximum bond strength was achieved by isolated acid etching, which yielded a significantly larger shear resistance than in combination with air abrasion.